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Diffstat (limited to 'src/mess/drivers/kim1.c')
-rw-r--r-- | src/mess/drivers/kim1.c | 359 |
1 files changed, 0 insertions, 359 deletions
diff --git a/src/mess/drivers/kim1.c b/src/mess/drivers/kim1.c deleted file mode 100644 index 71a98a96cdf..00000000000 --- a/src/mess/drivers/kim1.c +++ /dev/null @@ -1,359 +0,0 @@ -// license:GPL-2.0+ -// copyright-holders:Juergen Buchmueller -/****************************************************************************** - KIM-1 - - system driver - - Juergen Buchmueller, Oct 1999 - - KIM-1 memory map - - range short description - 0000-03FF RAM - 1400-16FF ??? - 1700-173F 6530-003 see 6530 - 1740-177F 6530-002 see 6530 - 1780-17BF RAM internal 6530-003 - 17C0-17FF RAM internal 6530-002 - 1800-1BFF ROM internal 6530-003 - 1C00-1FFF ROM internal 6530-002 - - 6530 - offset R/W short purpose - 0 X DRA Data register A - 1 X DDRA Data direction register A - 2 X DRB Data register B - 3 X DDRB Data direction register B - 4 W CNT1T Count down from value, divide by 1, disable IRQ - 5 W CNT8T Count down from value, divide by 8, disable IRQ - 6 W CNT64T Count down from value, divide by 64, disable IRQ - R LATCH Read current counter value, disable IRQ - 7 W CNT1KT Count down from value, divide by 1024, disable IRQ - R STATUS Read counter statzs, bit 7 = 1 means counter overflow - 8 X DRA Data register A - 9 X DDRA Data direction register A - A X DRB Data register B - B X DDRB Data direction register B - C W CNT1I Count down from value, divide by 1, enable IRQ - D W CNT8I Count down from value, divide by 8, enable IRQ - E W CNT64I Count down from value, divide by 64, enable IRQ - R LATCH Read current counter value, enable IRQ - F W CNT1KI Count down from value, divide by 1024, enable IRQ - R STATUS Read counter statzs, bit 7 = 1 means counter overflow - - 6530-002 (U2) - DRA bit write read - --------------------------------------------- - 0-6 segments A-G key columns 1-7 - 7 PTR KBD - - DRB bit write read - --------------------------------------------- - 0 PTR -/- - 1-4 dec 1-3 key row 1-3 - 4 RW3 - 5-9 7-seg 1-6 - 6530-003 (U3) - DRA bit write read - --------------------------------------------- - 0-7 bus PA0-7 bus PA0-7 - - DRB bit write read - --------------------------------------------- - 0-7 bus PB0-7 bus PB0-7 - - -The cassette interface -====================== - -The KIM-1 stores data on cassette using 2 frequencies: ~3700Hz (high) and ~2400Hz -(low). A high tone is output for 9 cycles and a low tone for 6 cycles. A logic bit -is encoded using 3 sequences of high and low tones. It always starts with a high -tone and ends with a low tone. The middle tone is high for a logic 0 and low for -0 logic 1. - -These high and low tone signals are fed to a circuit containing a LM565 PLL and -a 311 comparator. For a high tone a 1 is passed to DB7 of 6530-U2 for a low tone -a 0 is passed. The KIM-1 software measures the time it takes for the signal to -change from 1 to 0. - - - -Pasting: - 0-F : as is - + (inc) : ^ - AD : - - DA : = - GO : X - -(note: DA only works when addressing RAM) - -Test Paste: - =11^22^33^44^55^66^77^88^99^-0000 - Now press up-arrow to confirm the data has been entered. - -******************************************************************************/ - -#include "emu.h" -#include "cpu/m6502/m6502.h" -#include "sound/dac.h" -#include "machine/mos6530.h" -#include "imagedev/cassette.h" -#include "formats/kim1_cas.h" -#include "kim1.lh" - - -class kim1_state : public driver_device -{ -public: - kim1_state(const machine_config &mconfig, device_type type, const char *tag) - : driver_device(mconfig, type, tag), - m_maincpu(*this, "maincpu"), - m_riot2(*this, "miot_u2"), - m_cass(*this, "cassette"), - m_line0(*this, "LINE0"), - m_line1(*this, "LINE1"), - m_line2(*this, "LINE2"), - m_line3(*this, "LINE3") { } - - required_device<cpu_device> m_maincpu; - required_device<mos6530_device> m_riot2; - required_device<cassette_image_device> m_cass; - DECLARE_READ8_MEMBER(kim1_u2_read_a); - DECLARE_WRITE8_MEMBER(kim1_u2_write_a); - DECLARE_READ8_MEMBER(kim1_u2_read_b); - DECLARE_WRITE8_MEMBER(kim1_u2_write_b); - UINT8 m_u2_port_b; - UINT8 m_311_output; - UINT32 m_cassette_high_count; - UINT8 m_led_time[6]; - virtual void machine_start(); - virtual void machine_reset(); - DECLARE_INPUT_CHANGED_MEMBER(kim1_reset); - TIMER_DEVICE_CALLBACK_MEMBER(kim1_cassette_input); - TIMER_DEVICE_CALLBACK_MEMBER(kim1_update_leds); - -protected: - required_ioport m_line0; - required_ioport m_line1; - required_ioport m_line2; - required_ioport m_line3; -}; - - - - - -static ADDRESS_MAP_START(kim1_map, AS_PROGRAM, 8, kim1_state) - AM_RANGE(0x0000, 0x03ff) AM_MIRROR(0xe000) AM_RAM - AM_RANGE(0x1700, 0x173f) AM_MIRROR(0xe000) AM_DEVREADWRITE("miot_u3", mos6530_device, read, write ) - AM_RANGE(0x1740, 0x177f) AM_MIRROR(0xe000) AM_DEVREADWRITE("miot_u2", mos6530_device, read, write ) - AM_RANGE(0x1780, 0x17bf) AM_MIRROR(0xe000) AM_RAM - AM_RANGE(0x17c0, 0x17ff) AM_MIRROR(0xe000) AM_RAM - AM_RANGE(0x1800, 0x1bff) AM_MIRROR(0xe000) AM_ROM - AM_RANGE(0x1c00, 0x1fff) AM_MIRROR(0xe000) AM_ROM -ADDRESS_MAP_END - - -INPUT_CHANGED_MEMBER(kim1_state::kim1_reset) -{ - if (newval == 0) - m_maincpu->reset(); -} - - -static INPUT_PORTS_START( kim1 ) - PORT_START("LINE0") /* IN0 keys row 0 */ - PORT_BIT( 0x80, 0x00, IPT_UNUSED ) - PORT_BIT( 0x40, 0x40, IPT_KEYBOARD ) PORT_NAME("0") PORT_CODE(KEYCODE_0) PORT_CHAR('0') - PORT_BIT( 0x20, 0x20, IPT_KEYBOARD ) PORT_NAME("1") PORT_CODE(KEYCODE_1) PORT_CHAR('1') - PORT_BIT( 0x10, 0x10, IPT_KEYBOARD ) PORT_NAME("2") PORT_CODE(KEYCODE_2) PORT_CHAR('2') - PORT_BIT( 0x08, 0x08, IPT_KEYBOARD ) PORT_NAME("3") PORT_CODE(KEYCODE_3) PORT_CHAR('3') - PORT_BIT( 0x04, 0x04, IPT_KEYBOARD ) PORT_NAME("4") PORT_CODE(KEYCODE_4) PORT_CHAR('4') - PORT_BIT( 0x02, 0x02, IPT_KEYBOARD ) PORT_NAME("5") PORT_CODE(KEYCODE_5) PORT_CHAR('5') - PORT_BIT( 0x01, 0x01, IPT_KEYBOARD ) PORT_NAME("6") PORT_CODE(KEYCODE_6) PORT_CHAR('6') - - PORT_START("LINE1") /* IN1 keys row 1 */ - PORT_BIT( 0x80, 0x00, IPT_UNUSED ) - PORT_BIT( 0x40, 0x40, IPT_KEYBOARD ) PORT_NAME("7") PORT_CODE(KEYCODE_7) PORT_CHAR('7') - PORT_BIT( 0x20, 0x20, IPT_KEYBOARD ) PORT_NAME("8") PORT_CODE(KEYCODE_8) PORT_CHAR('8') - PORT_BIT( 0x10, 0x10, IPT_KEYBOARD ) PORT_NAME("9") PORT_CODE(KEYCODE_9) PORT_CHAR('9') - PORT_BIT( 0x08, 0x08, IPT_KEYBOARD ) PORT_NAME("A") PORT_CODE(KEYCODE_A) PORT_CHAR('A') - PORT_BIT( 0x04, 0x04, IPT_KEYBOARD ) PORT_NAME("B") PORT_CODE(KEYCODE_B) PORT_CHAR('B') - PORT_BIT( 0x02, 0x02, IPT_KEYBOARD ) PORT_NAME("C") PORT_CODE(KEYCODE_C) PORT_CHAR('C') - PORT_BIT( 0x01, 0x01, IPT_KEYBOARD ) PORT_NAME("D") PORT_CODE(KEYCODE_D) PORT_CHAR('D') - - PORT_START("LINE2") /* IN2 keys row 2 */ - PORT_BIT( 0x80, 0x00, IPT_UNUSED ) - PORT_BIT( 0x40, 0x40, IPT_KEYBOARD ) PORT_NAME("E") PORT_CODE(KEYCODE_E) PORT_CHAR('E') - PORT_BIT( 0x20, 0x20, IPT_KEYBOARD ) PORT_NAME("F") PORT_CODE(KEYCODE_F) PORT_CHAR('F') - PORT_BIT( 0x10, 0x10, IPT_KEYBOARD ) PORT_NAME("AD") PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-') - PORT_BIT( 0x08, 0x08, IPT_KEYBOARD ) PORT_NAME("DA") PORT_CODE(KEYCODE_EQUALS) PORT_CHAR('=') - PORT_BIT( 0x04, 0x04, IPT_KEYBOARD ) PORT_NAME("+") PORT_CODE(KEYCODE_UP) PORT_CHAR('^') - PORT_BIT( 0x02, 0x02, IPT_KEYBOARD ) PORT_NAME("GO") PORT_CODE(KEYCODE_X) PORT_CHAR('X') - PORT_BIT( 0x01, 0x01, IPT_KEYBOARD ) PORT_NAME("PC") PORT_CODE(KEYCODE_F6) - - PORT_START("LINE3") /* IN3 STEP and RESET keys, MODE switch */ - PORT_BIT( 0x80, 0x00, IPT_UNUSED ) - PORT_BIT( 0x40, 0x40, IPT_KEYBOARD ) PORT_NAME("sw1: ST") PORT_CODE(KEYCODE_F7) - PORT_BIT( 0x20, 0x20, IPT_KEYBOARD ) PORT_NAME("sw2: RS") PORT_CODE(KEYCODE_F3) PORT_CHANGED_MEMBER(DEVICE_SELF, kim1_state, kim1_reset, NULL) - PORT_DIPNAME(0x10, 0x10, "sw3: SS") PORT_CODE(KEYCODE_NUMLOCK) PORT_TOGGLE - PORT_DIPSETTING( 0x00, "single step") - PORT_DIPSETTING( 0x10, "run") - PORT_BIT( 0x08, 0x00, IPT_UNUSED ) - PORT_BIT( 0x04, 0x00, IPT_UNUSED ) - PORT_BIT( 0x02, 0x00, IPT_UNUSED ) - PORT_BIT( 0x01, 0x00, IPT_UNUSED ) -INPUT_PORTS_END - - -READ8_MEMBER( kim1_state::kim1_u2_read_a ) -{ - UINT8 data = 0xff; - - switch( ( m_u2_port_b >> 1 ) & 0x0f ) - { - case 0: - data = m_line0->read(); - break; - case 1: - data = m_line1->read(); - break; - case 2: - data = m_line2->read(); - break; - } - return data; -} - - -WRITE8_MEMBER( kim1_state::kim1_u2_write_a ) -{ - UINT8 idx = ( m_u2_port_b >> 1 ) & 0x0f; - - if ( idx >= 4 && idx < 10 ) - { - if ( data & 0x80 ) - { - output_set_digit_value( idx-4, data & 0x7f ); - m_led_time[idx - 4] = 15; - } - } -} - -READ8_MEMBER( kim1_state::kim1_u2_read_b ) -{ - if ( m_riot2->portb_out_get() & 0x20 ) - return 0xFF; - - return 0x7F | ( m_311_output ^ 0x80 ); -} - - -WRITE8_MEMBER( kim1_state::kim1_u2_write_b ) -{ - m_u2_port_b = data; - - if ( data & 0x20 ) - /* cassette write/speaker update */ - m_cass->output(( data & 0x80 ) ? -1.0 : 1.0 ); - - /* Set IRQ when bit 7 is cleared */ -} - - -TIMER_DEVICE_CALLBACK_MEMBER(kim1_state::kim1_cassette_input) -{ - double tap_val = m_cass->input(); - - if ( tap_val <= 0 ) - { - if ( m_cassette_high_count ) - { - m_311_output = ( m_cassette_high_count < 8 ) ? 0x80 : 0; - m_cassette_high_count = 0; - } - } - - if ( tap_val > 0 ) - m_cassette_high_count++; -} - - -TIMER_DEVICE_CALLBACK_MEMBER(kim1_state::kim1_update_leds) -{ - UINT8 i; - - for ( i = 0; i < 6; i++ ) - { - if ( m_led_time[i] ) - m_led_time[i]--; - else - output_set_digit_value( i, 0 ); - } -} - - -void kim1_state::machine_start() -{ - save_item(NAME(m_u2_port_b)); - save_item(NAME(m_311_output)); - save_item(NAME(m_cassette_high_count)); -} - - -void kim1_state::machine_reset() -{ - UINT8 i; - - for ( i = 0; i < 6; i++ ) - m_led_time[i] = 0; - - m_311_output = 0; - m_cassette_high_count = 0; -} - - -static MACHINE_CONFIG_START( kim1, kim1_state ) - /* basic machine hardware */ - MCFG_CPU_ADD("maincpu", M6502, 1000000) /* 1 MHz */ - MCFG_CPU_PROGRAM_MAP(kim1_map) - MCFG_QUANTUM_TIME(attotime::from_hz(60)) - - - /* video */ - MCFG_DEFAULT_LAYOUT( layout_kim1 ) - - /* sound hardware */ - MCFG_SPEAKER_STANDARD_MONO("mono") - MCFG_SOUND_ADD("dac", DAC, 0) - MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00) - - /* devices */ - MCFG_DEVICE_ADD("miot_u2", MOS6530, 1000000) - MCFG_MOS6530_IN_PA_CB(READ8(kim1_state, kim1_u2_read_a)) - MCFG_MOS6530_OUT_PA_CB(WRITE8(kim1_state, kim1_u2_write_a)) - MCFG_MOS6530_IN_PB_CB(READ8(kim1_state, kim1_u2_read_b)) - MCFG_MOS6530_OUT_PB_CB(WRITE8(kim1_state, kim1_u2_write_b)) - - MCFG_DEVICE_ADD("miot_u3", MOS6530, 1000000) - - MCFG_CASSETTE_ADD( "cassette" ) - MCFG_CASSETTE_FORMATS(kim1_cassette_formats) - MCFG_CASSETTE_DEFAULT_STATE(CASSETTE_STOPPED) - - MCFG_TIMER_DRIVER_ADD_PERIODIC("led_timer", kim1_state, kim1_update_leds, attotime::from_hz(60)) - MCFG_TIMER_DRIVER_ADD_PERIODIC("cassette_timer", kim1_state, kim1_cassette_input, attotime::from_hz(44100)) -MACHINE_CONFIG_END - - -ROM_START(kim1) - ROM_REGION(0x10000,"maincpu",0) - ROM_LOAD("6530-003.bin", 0x1800, 0x0400, CRC(a2a56502) SHA1(60b6e48f35fe4899e29166641bac3e81e3b9d220)) - ROM_LOAD("6530-002.bin", 0x1c00, 0x0400, CRC(2b08e923) SHA1(054f7f6989af3a59462ffb0372b6f56f307b5362)) -ROM_END - - -/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */ -COMP( 1975, kim1, 0, 0, kim1, kim1, driver_device, 0, "MOS Technologies", "KIM-1" , MACHINE_SUPPORTS_SAVE) |